Yes, using either the DV Connect mobile app or the Advanced Constituent Portal.
DV Connect Mobile App
The mobile app has feature to allowing the use of the DV Connect mobile app in Kiosk Mode. You can set up a user as a "Mobile App Kiosk User" and this user would only have access to the time tracking feature on the app. You can learn more about this user setting in this article "Kiosk Mode for Mobile App Users."
When the user logs into the mobile app, only the Time Tracking module is available and the screen automatically goes to the Time Tracking login screen. Volunteers can check in with their Constituent ID or the Ticket Number from the volunteer event they registered for.
Volunteers can select the Category of work they are doing and select to Check In or Check out and click submit.
If tickets were used with a volunteer event, the ticket's QR code could also be scanned to check in the volunteer. If a volunteer event was set up and there was auto-time tracking set up in the event level and the ticket is scanned, there is no need for check out.

Advanced Constituent Portal
If you have the advanced portal activated and you have selected Time Tracking in the list of options available for the portal, your constituents will be able to see their time tracking history and add new time if you have not disallowed that on the Portal Info page.

Your volunteers (constituents) will need to create a portal account. Portal accounts are not automatically created, the constituent must register themselves using the same name and email as you have in your database. You can learn more about inviting your constituents to create an account in this article "How do I invite constituents to sign up for the portal?"

Once logged into their portal account, the constituent can click on the Time Tracking icon to open the page to show the constituent's time tracking history. The Last Session date and time as well as the constituent's Total Hours are shown on the top of the page.
If you have authorized it in the Constituent Portal settings, the constituent can add their own time tracking. They have two options, the first is to click on +Add Time.

In the new window they can allow the software to calculate the time for them by entering the dates and times, or they can click on Enter Time to manually enter the date and number of hours and minutes.
They have access to all the same fields as internal users do and can assign the applicable Service Categories, Related Contact, Location, and add Comments.
When they click Update the record will be saved in the database. Only an authorized internal user can edit the information.

Constituents can also use a timer feature to turn on and off time tracking from the portal. Clicking on Start Time will open a pop up window. Clicking on Start Time again will start the timer.

The timer will show the start time and how many hours and minutes have currently elapsed. To stop the timer, the constituent will click on End Time.

The time tracking entry window will open again with the hours and minutes automatically entered. This information can be edited as needed and the constituent will assign the other fields as needed. They will click Update at the bottom of the window to save the record.

Clicking on the Details link for any time record will provide a quick reference for the day and hours as well as any details or additional info.
